| 초록 |
A graft copolymer based mesoporous TiO2/ZnO interfacial layers for quasi solid state dyesensitized solar cells (QDSSCs) has been fabricated by the sol-gel method. The features of the mesoporous TiO2/ZnO interfacial layers were tested by SEM, EDS, and UV-vis spectroscopy. The cells were systemically tested by the photocurrent-voltage (J-V) curve, and EIS techniques. The mesoporous TiO2/ZnO interfacial layers was found to accelerate electron transfer, light harvesting and retard electron recombination, eventually leading to an efficient improve in energy conversion efficiency. The QDSSCs assembled with the interfacial layer consisting of mesoporous TiO2/ZnO exhibited short-circuit current density (JSC) of 9.8 mA cm−2, open-circuit voltage (VOC) of 0.76 V and conversion efficiency of 5.0%, which were higher than that without interfacial layer (4.2 %) |
